Calculate MD5 Hash of File (or SHA-1, and other hash algorithms)

Demonstrates how to calculate a hash for a file's contents.

Download Chilkat Ruby Library

require 'chilkat'

crypt = Chilkat::CkCrypt2.new()

success = crypt.UnlockComponent("Anything for 30-day trial")
if (success != true)
    print "Crypt component unlock failed" + "\n"
    exit
end

#  Set the name of the hash algorithm.
#  Other choices include "sha1", "sha384", "sha512", "md2", "md5", and "haval".
crypt.put_HashAlgorithm("md5")

#  EncodingMode specifies the encoding of the hash output.
#  It may be "hex", "url", "base64", or "quoted-printable".
crypt.put_EncodingMode("hex")

#  Files of any type may be hashed -- it doesn't matter
#  if the file is binary or text...

hashStr = crypt.hashFileENC("c:/temp/something.dat")

print hashStr + "\n";